如何更改站点范围的jQuery slideUp / slideDown持续时间？

Question

Is there a way to adjust the default slideUp() and slideDown() duration in jQuery? I have a site which has a bunch of slideUp/slideDown calls and I'd like to change their duration site-wide. The only options I can find:

• Regex search and replace across all of my JS code. Possible, and I can insert a variable to change the duration again later. But it would be more convenient if there were a jQuery setting, especially to reduce testing time.
• Edit jQuery itself. Not a viable option for maintenance reasons.

Answer 1

You can change the default animation speed like this:

$.fx.speeds._default = 1000;

Important Note: I think this will change the default speed for every jQuery animation, which may not be ideal in this case.

Answer 2

You could override them like:

$.prototype.slideDown = (function(slideDown){
    var defaultSpeed = 2000;
    return function(speed){
        slideDown.call( this, speed || defaultSpeed );
    };
})($.prototype.slideDown);

Then just do the same with the slideup function:

$.prototype.slideUp = (function(slideUp){
    var defaultSpeed = 2000;
    return function(speed){
        slideUp.call( this, speed || defaultSpeed );
    };
})($.prototype.slideUp);

Then just call it:

$('#whatever').slideUp();

Just make sure to override them before you start using them.